Fungal spores as a source of sodium salt particles in the Amazon basin
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Xiamen Univ., Xiamen (China)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States); Univ. Wurzburg, Wurzburg (Germany)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
- Max Planck Institute for Chemistry, Mainz (Germany)
- Univ. Federal de Sao Paulo, Diadema, SP (Brazil)
- Univ. of Sao Paulo, Sao Paulo, SP (Brazil); Univ. Lille, Lille (France)
- Federal Univ. of Para, Belem (Brazil)
- Univ. of Sao Paulo, Sao Paulo, SP (Brazil)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Purdue Univ., West Lafayette, IN (United States)
In the Amazon basin, particles containing mixed sodium salts are routinely observed and are attributed to marine aerosols transported from the Atlantic Ocean. Using chemical imaging analysis, we show that, during the wet season, fungal spores emitted by the forest biosphere contribute at least 30% (by number) to sodium salt particles in the central Amazon basin. Hydration experiments indicate that sodium content in fungal spores governs their growth factors. Modeling results suggest that fungal spores account for ~69% (31-95%) of the total sodium mass during the wet season and that their fractional contribution increases during nighttime. Contrary to common assumptions that sodium-containing aerosols originate primarily from marine sources, our results suggest that locally-emitted fungal spores contribute substantially to the number and mass of coarse particles containing sodium. Hence, their role in cloud formation and contribution to salt cycles and the terrestrial ecosystem in the Amazon basin warrant further consideration.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Grant/Contract Number:
- AC05-76RL01830; AC02-05CH11231
- OSTI ID:
- 1483630
- Alternate ID(s):
- OSTI ID: 1493267
- Report Number(s):
- PNNL-SA-130861
- Journal Information:
- Nature Communications, Vol. 9, Issue 1; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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